65 (s, 3H, OCH3. 13C NMR ((CD3)2SO, 125 MHz): 186.7, 156.eight, 148.2, 147.1, 146.7, 146.1, 142.8, 136.7, 128.5, 123.three, 121.77, 121.75, 121.7, 119.3, 117.two, 112.0, 111.7, 111.1, 95.0, 55.7, 55.3. HPLC: 13.87 min., purity
65 (s, 3H, OCH3. 13C NMR ((CD3)2SO, 125 MHz): 186.7, 156.eight, 148.2, 147.1, 146.7, 146.1, 142.8, 136.7, 128.five, 123.3, 121.77, 121.75, 121.7, 119.3, 117.2, 112.0, 111.7, 111.1, 95.0, 55.7, 55.3.…